document.write( "Question 1039603: What substitution should be used to rewrite x^8 – 3x^4 + 2 = 0 as a quadratic equation?\r
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\n" ); document.write( "c) u = x^8
\n" ); document.write( "d) u = x^16 \n" ); document.write( "

Algebra.Com's Answer #654365 by josgarithmetic(39617) $\"\"$ $\"About$

You can put this solution on YOUR website!
Three terms in the quadratic or quadratic-form expression, and the variable is x. You want some new variable, u, so that you can make $\"u%5E2-3u%2B2=0\"$ .\r
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